What would you buy a non pronounceable LLLLL for? But, above all, why would someone buy that from you? Because unless you think about developing it, in which case the name matters only to a certain degree, your goal is to sell it to someone else isn't it?
I normally don't buy dashed names so I can't help you. As for LLLNN, LLnnL, NNlll...really...I wouldn't unless it's something really specific or outstanding.